Adjustable shelf

ABSTRACT

An adjustable shelf including a first shelf unit, a second shelf unit, and a first locking device. The first shelf unit is rotatably connected with the second shelf unit through a first connector; the first locking device locks the first shelf unit to the second shelf unit; when the first locking device relieves the locking between the first shelf unit and the second shelf unit, the first shelf unit and the second shelf unit are able to rotate relatively, so that a customer can relieve the locking of the first locking device between the first shelf unit and the second shelf unit, and the customer can adjust the size and angle of the shelf by rotating the first shelf unit and/or the second shelf unit; the shelf can adapt to wall corners and wall surfaces in different sizes according to an actual condition and demand of the customer.

FIELD OF THE INVENTION

The present disclosure relates to the field of shelves, in particular toan adjustable shelf.

BACKGROUND OF THE INVENTION

A shelf is generally installed in a kitchen or bathroom. It is mainlyused for placing some soap, shampoo, shower gel, and other toiletrieswhen installed in the bathroom. Under normal circumstances, consumersusually install fan-shaped or triangular shelves at wall corners to savespace. However, since the angles of the wall corners are difficult tounify, they may be acute angles, right angles, or obtuse angles. Theshelves sold on the market are generally in the shape of right-angledfan-shaped or right-angled triangular shelves, and have fixed sizes.Therefore, it is difficult for the consumers to buy a shelf with asuitable angle and size according to their actual situation. Such ashelf usually needs to be specially customized, which is not only moreexpensive, but also takes a long time. It has become a major problem forthe consumers.

SUMMARY OF THE INVENTION

In order to overcome the shortcomings in the prior art, the presentdisclosure provides an adjustable shelf. An angle and size of the shelfare adjustable and can meet usage requirements of different scenarios.The adjustable shelf is installed conveniently and stably, and greatlyenhances the user experience.

The present disclosure adopts the following technical solution: anadjustable shelf, including a first shelf unit, a second shelf unit, anda first locking device, wherein the first shelf unit is rotatablyconnected with the second shelf unit through a first connector; thefirst locking device locks the first shelf unit to the second shelfunit; and when the first locking device relieves the locking between thefirst shelf unit and the second shelf unit, the first shelf unit and thesecond shelf unit are able to rotate relatively.

Further, the first shelf unit includes a first base; the second shelfunit includes a second base; the first base has a first straight edge, asecond straight edge, and a first arc-shaped edge; one end of the firststraight edge is connected with one end of the second straight edgethrough the first arc-shaped edge; the other end of the first straightedge is connected with the other end of the second straight edge; thesecond base has a third straight edge, a fourth straight edge, and asecond arc-shaped edge; one end of the third straight edge is connectedwith one end of the fourth straight edge through the second arc-shapededge; and the other end of the third straight edge is connected with theother end of the fourth straight edge.

Further, the first base and the second base are stacked; the first baseis provided with a first shaft hole; the second base is provided with asecond shaft hole; and the first connector is rotatably sleeved on thefirst shaft hole and the second shaft hole, so that the first shelf unitand the second shelf unit is able to rotate around the first connector.

Further, the first shelf unit further includes a first side wallextending along the first straight edge, a second side wall extendingalong the first arc-shaped edge, a third side wall extending along thethird straight edge, and a fourth side wall extending along the secondarc-shaped edge, wherein the first side wall is connected with thesecond side wall; the second side wall and the fourth side wall arestacked; the second side wall is connected with the fourth side wallthrough the first locking device; and the fourth side wall is connectedwith the third side wall.

Further, the first locking device includes a first locking member, afirst locking slot arranged on the second side wall, and a secondlocking slot arranged on the fourth side wall; the first locking memberis sleeved on the first locking slot and the second locking slot; andthe second side wall is locked to the fourth side wall.

Further, the first shelf unit further includes a second locking device,the second locking device includes a second locking member, a thirdlocking slot arranged on the first side wall, a third locking member,and a fourth locking slot arranged on the third side wall; the secondlocking member is sleeved on the third locking slot and locks the firstside wall to a wall body; and the third locking member is sleeved on thefourth locking slot and locks the third side wall to the wall body.

Further, the first base and the second base are provided with severalwater filtering openings.

Further, an acute angle is formed between the first straight edge andthe second straight edge, and an acute angle is formed between the thirdstraight edge and the fourth straight edge.

Further, an included angle greater than or equal to 90 degrees is formedbetween the first straight edge and the second straight edge, and aright angle greater than or equal to 90 degrees is formed between thethird straight edge and the fourth straight edge.

Further, an acute angle of 45 degrees is formed between the firststraight edge and the second straight edge, and an acute angle of 45degrees is formed between the third straight edge and the fourthstraight edge.

The present disclosure adopts the following technical solution: anadjustable shelf, including a first shelf unit, a second shelf unitrotatably connected with the second shelf unit, and a first lockingdevice configured to lock the first shelf unit to the second shelf unit;and when the first locking device relieves the locking between the firstshelf unit and the second shelf unit, the first shelf unit and thesecond shelf unit are able to rotate relatively to each other.

Further, the first shelf unit includes a first base; the second shelfunit includes a second base; the first base has a first straight edge, asecond straight edge, and a first arc-shaped edge; one end of the firststraight edge is connected with one end of the second straight edgethrough the first arc-shaped edge; the other end of the first straightedge is connected with the other end of the second straight edge; thesecond base has a third straight edge, a fourth straight edge, and asecond arc-shaped edge; one end of the third straight edge is connectedwith one end of the fourth straight edge through the second arc-shapededge; and the other end of the third straight edge is connected with theother end of the fourth straight edge.

Further, the first base and the second base are stacked; the first baseis provided with a first shaft hole; the second base is provided with asecond shaft hole; and a rotating shaft is rotatably sleeved on thefirst shaft hole and the second shaft hole, so that the first shelf unitand the second shelf unit is able to rotate around the rotating shaft.

Further, the first shelf unit further includes a first side wallextending along the first straight edge, a second side wall extendingalong the first arc-shaped edge, a third side wall extending along thethird straight edge, and a fourth side wall extending along the secondarc-shaped edge, wherein the first side wall is connected with thesecond side wall; the second side wall and the fourth side wall arestacked; the second side wall is connected with the fourth side wallthrough the first locking device; and the fourth side wall is connectedwith the third side wall.

Further, the first locking device includes a first locking member, afirst locking slot arranged on the second side wall, and a secondlocking slot arranged on the fourth side wall; the first locking memberis sleeved on the first locking slot and the second locking slot; andthe second side wall is locked to the fourth side wall.

Further, the first shelf unit further includes a second locking device,the second locking device includes a second locking member, a thirdlocking slot arranged on the first side wall, a third locking member,and a fourth locking slot arranged on the third side wall; the secondlocking member is sleeved on the third locking slot and locks the firstside wall to a wall body; and the third locking member is sleeved on thefourth locking slot and locks the third side wall to the wall body.

Further, the first base and the second base are provided with severalwater filtering openings.

Further, an acute angle is formed between the first straight edge andthe second straight edge, and an acute angle is formed between the thirdstraight edge and the fourth straight edge.

Further, an included angle greater than or equal to 90 degrees is formedbetween the first straight edge and the second straight edge, and aright angle greater than or equal to 90 degrees is formed between thethird straight edge and the fourth straight edge.

Further, an acute angle of 45 degrees is formed between the firststraight edge and the second straight edge, and an acute angle of 45degrees is formed between the third straight edge and the fourthstraight edge.

The present disclosure has the beneficial effects: by means of the abovestructure, since the adjustable shelf includes the first shelf unit, thesecond shelf unit, and the first locking device, the first shelf unit isrotatably connected with the second shelf unit through the firstconnector, and the first locking device locks the first shelf unit tothe second shelf unit; and when the first locking device relieves thelocking between the first shelf unit and the second shelf unit, thefirst shelf unit and the second shelf unit are able to rotaterelatively, so that a customer can relieve the locking of the firstlocking device between the first shelf unit and the second shelf unit,and the customer can adjust the size and angle of the shelf by rotatingthe first shelf unit and/or the second shelf unit; the shelf can adaptto wall corners and wall surfaces in different sizes according to anactual condition and demand of the customer; and the adjustable shelf isconveniently and stably mounted, has high generality, and greatlyenhances the user experience. Further, when the customer adjusts theshelf to an appropriate size and angle by rotating the first shelf unitand/or the second shelf unit, a user can lock the first shelf unit tothe second shelf unit through the first locking device, so that thefirst shelf unit and the second shelf unit may not rotate relatively tofix the size and angle of the shelf, which makes the shelf more stableand further enhances the user experience.

BRIEF DESCRIPTIONS OF THE DRAWINGS

Implementations of the present disclosure will now be described, by wayof embodiment, with reference to the attached figures. It should beunderstood, the drawings are shown for illustrative purpose only, forordinary person skilled in the art, other drawings obtained from thesedrawings without paying creative labor by an ordinary person skilled inthe art should be within scope of the present disclosure.

FIG. 1 is a schematic diagram of an entire structure when a firststraight edge and a second straight edge form an included angle of 45degrees, and a third straight edge and a fourth straight edge form anincluded angle of 45 degrees according to the present disclosure;

FIG. 2 is a schematic diagram of another entire structure when a firststraight edge and a second straight edge form an included angle of 45degrees, and a third straight edge and a fourth straight edge form anincluded angle of 45 degrees according to the present disclosure;

FIG. 3 is an exploded diagram when a first straight edge and a secondstraight edge form an included angle of 45 degrees, and a third straightedge and a fourth straight edge form an included angle of 45 degreesaccording to the present disclosure;

FIG. 4 is another exploded diagram when a first straight edge and asecond straight edge form an included angle of 45 degrees, and a thirdstraight edge and a fourth straight edge form an included angle of 45degrees according to the present disclosure;

FIG. 5 is a sectional view of sectioning along a first locking deviceand a first connector;

FIG. 6 is an enlarged diagram of a portion A of FIG. 5 ;

FIG. 7 is an enlarged diagram of a portion B of FIG. 5 ;

FIG. 8 is a schematic diagram of an entire structure when a firststraight edge and a second straight edge form an included angle of 90degrees, and a third straight edge and a fourth straight edge form anincluded angle of 90 degrees according to the present disclosure;

FIG. 9 is a schematic diagram of another entire structure when a firststraight edge and a second straight edge form an included angle of 90degrees, and a third straight edge and a fourth straight edge form anincluded angle of 90 degrees according to the present disclosure;

FIG. 10 is an exploded diagram when a first straight edge and a secondstraight edge form an included angle of 90 degrees, and a third straightedge and a fourth straight edge form an included angle of 90 degreesaccording to the present disclosure; and

FIG. 11 is another exploded diagram when a first straight edge and asecond straight edge form an included angle of 90 degrees, and a thirdstraight edge and a fourth straight edge form an included angle of 90degrees according to the present disclosure.

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENT

It will be appreciated that for simplicity and clarity of illustration,where appropriate, reference numerals have been repeated among thedifferent figures to indicate corresponding or analogous elements. Inaddition, numerous specific details are set forth in order to provide athorough understanding of the exemplary embodiments described herein.However, it will be understood by those of ordinary skill in the artthat the exemplary embodiments described herein may be practiced withoutthese specific details. In other instances, methods, procedures, andcomponents have not been described in detail so as not to obscure therelated relevant feature being described. Also, the description is notto be considered as limiting the scope of the exemplary embodimentsdescribed herein. The drawings are not necessarily to scale and theproportions of certain parts may be exaggerated to better illustratedetails and features of the present disclosure.

The term “comprising” when utilized, means “including, but notnecessarily limited to”; it specifically indicates open-ended inclusionor membership in the so-described combination, group, series, and thelike. The disclosure is illustrated by way of example and not by way oflimitation in the figures of the accompanying drawings in which likereferences indicate similar elements. It should be noted that referencesto “an” or “one” embodiment in this disclosure are not necessarily tothe same embodiment, and such references can mean “at least one”. Inaddition, the terms “first” and “second” are used for descriptivepurposes only and cannot be understood as indicating or implyingrelative importance or implying the number of indicated technicalfeatures. Thus, the features defined as “first” and “second” mayexplicitly or implicitly include one or more of the said features. Inthe description of embodiments of the application, “a plurality of”means two or more, unless otherwise specifically defined.

Referring to FIG. 1 to FIG. 11 , an adjustable shelf includes a firstshelf unit 1, a second shelf unit 2, and a first locking device 4. Thefirst shelf unit 1 is rotatably connected with the second shelf unit 2through a first connector 3; the first locking device 4 locks the firstshelf unit 1 to the second shelf unit 2; and when the first lockingdevice 4 relieves the locking between the first shelf unit 1 and thesecond shelf unit 2, the first shelf unit 1 and the second shelf unit 2are able to rotate relatively.

By means of the above structure, since the adjustable shelf includes thefirst shelf unit, the second shelf unit, and the first locking device,the first shelf unit is rotatably connected with the second shelf unitthrough the first connector, and the first locking device locks thefirst shelf unit to the second shelf unit; and when the first lockingdevice relieves the locking between the first shelf unit and the secondshelf unit, the first shelf unit and the second shelf unit are able torotate relatively, so that a customer can relieve the locking of thefirst locking device between the first shelf unit and the second shelfunit, and the customer can adjust the size and angle of the shelf byrotating the first shelf unit and/or the second shelf unit; the shelfcan adapt to wall corners and wall surfaces in different sizes accordingto an actual condition and demand of the customer; and the adjustableshelf is conveniently and stably mounted, has high generality, andgreatly enhances the user experience. Further, when the customer adjuststhe shelf to an appropriate size and angle by rotating the first shelfunit and/or the second shelf unit, a user can lock the first shelf unitto the second shelf unit through the first locking device, so that thefirst shelf unit and the second shelf unit may not rotate relatively tofix the size and angle of the shelf, which makes the shelf more stableand further enhances the user experience. The first connector 3 is arotating shaft.

In this embodiment, the first shelf unit 1 includes a first base 11; thesecond shelf unit 2 includes a second base 21; the first base 11 has afirst straight edge 111, a second straight edge 112, and a firstarc-shaped edge 113; one end of the first straight edge 111 is connectedwith one end of the second straight edge 112 through the firstarc-shaped edge 113; the other end of the first straight edge 111 isconnected with the other end of the second straight edge 112; the secondbase 21 has a third straight edge 211, a fourth straight edge 212, and asecond arc-shaped edge 213; one end of the third straight edge 211 isconnected with one end of the fourth straight edge 212 through thesecond arc-shaped edge 213; and the other end of the third straight edge211 is connected with the other end of the fourth straight edge 212. Thefirst base 11 and the second base 21 are stacked; the first base 11 isprovided with a first shaft hole 115; the second base 21 is providedwith a second shaft hole 215; and the first connector 3 is rotatablysleeved on the first shaft hole 115 and the second shaft hole 215, sothat the first shelf unit 1 and the second shelf unit 2 is able torotate around the first connector 3. Specifically, the adjustable shelffurther includes a first side wall 12 extending along the first straightedge 111, a second side wall 13 extending along the first arc-shapededge 113, a third side wall 22 extending along the third straight edge211, and a fourth side wall 23 extending along the second arc-shapededge 213; the first side wall 12 is connected with the second side wall13; the second side wall 13 and the fourth side wall 23 are stacked; thesecond side wall 13 is connected with the fourth side wall 23 throughthe first locking device 4; and the fourth side wall 23 is connectedwith the third side wall 22. Further, the first base and the second baseare both fan-shaped, and the first shelf unit and the second shelf unitare both fan-shaped. In some embodiments, the first base and the secondbase may be also set to be triangular, and the first shelf unit and thesecond shelf unit are set to be triangular. By means of the abovestructure, the customer can adjust, by rotating the first base and/orthe second base, an angle between the first straight edge and the thirdstraight edge to adjust an angle between the first side wall extendingalong the first straight edge and the third side wall extending alongthe third straight edge, so that the first side wall and the third sidewall can better match with the angles and sizes of the wall corners andthe wall surfaces to achieve a function of adjusting the angle and sizeof the shelf.

Specifically, the first base 11 further includes a third arc-shaped edge114; the second base 21 further includes a fourth arc-shaped edge 214;one end of the first straight edge 111 is connected with one end of thesecond straight edge 112 through the first arc-shaped edge 113, and theother end of the first straight edge 111 is connected with the other endof the second straight edge 112 through the third arc-shaped edge 114;one end of the third straight edge 211 is connected with one end of thefourth straight edge 212 through the second arc-shaped edge 213; and theother end of the third straight edge 211 is connected with the other endof the fourth straight edge 212 through the fourth arc-shaped edge 214.

In this embodiment, the first locking device 4 includes a first lockingmember 41, a first locking slot 42 arranged on the second side wall 13,and a second locking slot 43 arranged on the fourth side wall 23; thefirst locking member 41 is sleeved on the first locking slot 42 and thesecond locking slot 43; and the second side wall 13 is locked to thefourth side wall 23. By means of the above structure, a function oflocking the second side wall to the fourth side wall is effectivelyachieved. When the customer adjusts, by rotating the first base and/orthe second base, the angle between the first straight edge and the thirdstraight edge to adjust the angle between the first side wall extendingalong the first straight edge and the third side wall extending alongthe third straight edge to be suitable for the wall corner and the wallsurface, the customer can lock the second side wall to the fourth sidewall through the first locking member, so that the first shelf unit andthe second shelf unit cannot rotate relatively to fix the angle betweenthe first side wall and the third side wall to make the shelf morestable. A storage cavity 7 is formed among the first base, the secondbase, the first side wall, the second side wall, the third side wall,and the fourth side wall. The customer can put daily supplies into thestorage cavity to prevent falling, and at the same time, the user canalso adjust, by rotating the first base and/or the second base, theangle between the first straight edge and the third straight edge toadjust the angle between the first side wall extending along the firststraight edge and the third side wall extending along the third straightedge, so as to adjust the size of the storage cavity; and after theadjustment is completed, the customer can lock the second side wall tothe fourth side wall through the first locking member, so that the firstshelf unit and the second shelf unit cannot rotate relatively to fix thesize of the storage cavity. Specifically, the first locking member 41includes a first screw 411 and a first nut 412; the first screw islocated on the outer side of the fourth side wall, and the first nut islocated on the inner side of the second side wall; and the first screwpasses through the first locking slot and the second locking slot fromthe outer side of the fourth side wall and is connected with the firstnut, so that the first screw and the first nut clamp and lock the secondside wall to the fourth side wall.

In this embodiment, the adjustable shelf further includes a secondlocking device 5. The second locking device 5 includes a second lockingmember 51, a third locking slot 52 arranged on the first side wall 12, athird locking member 53, and a fourth locking slot 54 arranged on thethird side wall 22; the second locking member 51 is sleeved on the thirdlocking slot 52 and locks the first side wall 12 to a wall body; and thethird locking member 53 is sleeved on the fourth locking slot 54 andlocks the third side wall 22 to the wall body. The second locking member51 includes a second screw 511 and a second nut 512; the second screw isarranged on the inner side of the first side wall; the second nut isarranged on a wall surface, or other planes; the third locking member 53includes a third screw 531 and a third nut 532; the third screw isarranged on the inner side of the third side wall; the third nut isarranged on a wall surface, or other planes; when the customer adjuststhe angle between the first side wall and the third side wall to matchwith the wall surface, the second screw passes through the third lockingslot from the inner side of the first side wall and is connected withthe second nut, so as to lock the first side wall to the wall surface;the third screw passes through the fourth locking slot from the innerside of the third side wall and is connected with the third nut, so asto lock the third side wall to the wall surface. The design isreasonable, and the connection is stable. The installation of the shelfis effectively achieved.

In this embodiment, the first base 11 and the second base 21 are bothprovided with several water filtering openings 6. The several waterfiltering openings are fan-shaped devices and are uniformly arranged onthe first base and the second base along circumferential directions ofthe first arc-shaped edge and the second arc-shaped edge.

In this embodiment, an acute angle is formed between the first straightedge 111 and the second straight edge 112, and an acute angle is formedbetween the third straight edge 211 and the fourth straight edge 212.Specifically, an included angle of 45 degrees is formed between thefirst straight edge 111 and the second straight edge 112, and anincluded angle of 45 degrees is formed between the third straight edge211 and the fourth straight edge 212. By means of the above structure,when the included angle of 45 degrees is formed between the firststraight edge 111 and the third straight edge 112, and the includedangle of 45 degrees is formed between the third straight edge 211 andthe fourth straight edge 212, the user can adjust the angle between thefirst straight edge and the third straight edge within a range from 45degrees to 90 degrees by rotating the first base and/or the second base,so as to adjust the angle between the first side wall and the third sidewall within a range from 45 degrees to 90 degrees, so that the shelf canmatch with a wall corner having an angle between 45 degrees and 90degrees.

In this embodiment, an included angle greater than or equal to 90degrees is formed between the first straight edge 111 and the secondstraight edge 112, and a right angle greater than or equal to 90 degreesis formed between the third straight edge 211 and the fourth straightedge 212. By means of the above structure, when the included angle of 90degrees is formed between the first straight edge 111 and the thirdstraight edge 112, and the included angle of 90 degrees is formedbetween the third straight edge 211 and the fourth straight edge 212,the user can adjust the angle between the first straight edge and thethird straight edge within a range from 90 degrees to 180 degrees byrotating the first base and/or the second base, so as to adjust theangle between the first side wall and the third side wall within a rangefrom 90 degrees to 180 degrees, so that the shelf can match with a wallcorner having an angle between 90 degrees and 180 degrees.

The above description only describes embodiments of the presentdisclosure, and is not intended to limit the present disclosure, variousmodifications and changes can be made to the present disclosure. Anymodifications, equivalent substitutions, improvements, etc. made withinthe spirit and scope of the present disclosure are intended to beincluded within the scope of the present disclosure.

What is claimed is:
 1. An adjustable shelf, comprising a first shelfunit, a second shelf unit, and a first locking device, wherein the firstshelf unit is rotatably connected with the second shelf unit through afirst connector; the first locking device locks the first shelf unit tothe second shelf unit; and when the first locking device relieves thelocking between the first shelf unit and the second shelf unit, thefirst shelf unit and the second shelf unit are able to rotaterelatively.
 2. The adjustable shelf according to claim 1, wherein thefirst shelf unit comprises a first base; the second shelf unit comprisesa second base; the first base has a first straight edge, a secondstraight edge, and a first arc-shaped edge; one end of the firststraight edge is connected with one end of the second straight edgethrough the first arc-shaped edge; the other end of the first straightedge is connected with the other end of the second straight edge; thesecond base has a third straight edge, a fourth straight edge, and asecond arc-shaped edge; one end of the third straight edge is connectedwith one end of the fourth straight edge through the second arc-shapededge; and the other end of the third straight edge is connected with theother end of the fourth straight edge.
 3. The adjustable shelf accordingto claim 2, wherein the first base and the second base are stacked; thefirst base is provided with a first shaft hole; the second base isprovided with a second shaft hole; and the first connector is rotatablysleeved on the first shaft hole and the second shaft hole, so that thefirst shelf unit and the second shelf unit is able to rotate around thefirst connector.
 4. The adjustable shelf according to claim 2, furthercomprising a first side wall extending along the first straight edge, asecond side wall extending along the first arc-shaped edge, a third sidewall extending along the third straight edge, and a fourth side wallextending along the second arc-shaped edge, wherein the first side wallis connected with the second side wall; the second side wall and thefourth side wall are stacked; the second side wall is connected with thefourth side wall through the first locking device; and the fourth sidewall is connected with the third side wall.
 5. The adjustable shelfaccording to claim 4, wherein the first locking device comprises a firstlocking member, a first locking slot arranged on the second side wall,and a second locking slot arranged on the fourth side wall; the firstlocking member is sleeved on the first locking slot and the secondlocking slot; and the second side wall is locked to the fourth sidewall.
 6. The adjustable shelf according to claim 4, further comprising asecond locking device, wherein the second locking device comprises asecond locking member, a third locking slot arranged on the first sidewall, a third locking member, and a fourth locking slot arranged on thethird side wall; the second locking member is sleeved on the thirdlocking slot and locks the first side wall to a wall body; and the thirdlocking member is sleeved on the fourth locking slot and locks the thirdside wall to the wall body.
 7. The adjustable shelf according to claim2, wherein the first base and the second base are provided with severalwater filtering openings.
 8. The adjustable shelf according to claim 2,wherein an acute angle is formed between the first straight edge and thesecond straight edge, and an acute angle is formed between the thirdstraight edge and the fourth straight edge.
 9. The adjustable shelfaccording to claim 2, wherein an included angle greater than or equal to90 degrees is formed between the first straight edge and the secondstraight edge, and a right angle greater than or equal to 90 degrees isformed between the third straight edge and the fourth straight edge. 10.The adjustable shelf according to claim 8, wherein an acute angle of 45degrees is formed between the first straight edge and the secondstraight edge, and an acute angle of 45 degrees is formed between thethird straight edge and the fourth straight edge.
 11. An adjustableshelf, comprising: a first shelf unit; a second shelf unit rotatablyconnected with the second shelf unit; and a first locking device,configured to lock the first shelf unit to the second shelf unit; andwhen the first locking device relieves the locking between the firstshelf unit and the second shelf unit, the first shelf unit and thesecond shelf unit are able to rotate relatively to each other.
 12. Theadjustable shelf according to claim 11, wherein the first shelf unitcomprises a first base; the second shelf unit comprises a second base;the first base has a first straight edge, a second straight edge, and afirst arc-shaped edge; one end of the first straight edge is connectedwith one end of the second straight edge through the first arc-shapededge; the other end of the first straight edge is connected with theother end of the second straight edge; the second base has a thirdstraight edge, a fourth straight edge, and a second arc-shaped edge; oneend of the third straight edge is connected with one end of the fourthstraight edge through the second arc-shaped edge; and the other end ofthe third straight edge is connected with the other end of the fourthstraight edge.
 13. The adjustable shelf according to claim 12, whereinthe first base and the second base are stacked; the first base isprovided with a first shaft hole; the second base is provided with asecond shaft hole; and a rotating shaft is rotatably sleeved on thefirst shaft hole and the second shaft hole, so that the first shelf unitand the second shelf unit is able to rotate around the rotating shaft.14. The adjustable shelf according to claim 12, further comprising afirst side wall extending along the first straight edge, a second sidewall extending along the first arc-shaped edge, a third side wallextending along the third straight edge, and a fourth side wallextending along the second arc-shaped edge, wherein the first side wallis connected with the second side wall; the second side wall and thefourth side wall are stacked; the second side wall is connected with thefourth side wall through the first locking device; and the fourth sidewall is connected with the third side wall.
 15. The adjustable shelfaccording to claim 14, wherein the first locking device comprises afirst locking member, a first locking slot arranged on the second sidewall, and a second locking slot arranged on the fourth side wall; thefirst locking member is sleeved on the first locking slot and the secondlocking slot; and the second side wall is locked to the fourth sidewall.
 16. The adjustable shelf according to claim 14, further comprisinga second locking device, wherein the second locking device comprises asecond locking member, a third locking slot arranged on the first sidewall, a third locking member, and a fourth locking slot arranged on thethird side wall; the second locking member is sleeved on the thirdlocking slot and locks the first side wall to a wall body; and the thirdlocking member is sleeved on the fourth locking slot and locks the thirdside wall to the wall body.
 17. The adjustable shelf according to claim12, wherein the first base and the second base are provided with severalwater filtering openings.
 18. The adjustable shelf according to claim12, wherein an acute angle is formed between the first straight edge andthe second straight edge, and an acute angle is formed between the thirdstraight edge and the fourth straight edge.
 19. The adjustable shelfaccording to claim 12, wherein an included angle greater than or equalto 90 degrees is formed between the first straight edge and the secondstraight edge, and a right angle greater than or equal to 90 degrees isformed between the third straight edge and the fourth straight edge. 20.The adjustable shelf according to claim 18, wherein an acute angle of 45degrees is formed between the first straight edge and the secondstraight edge, and an acute angle of 45 degrees is formed between thethird straight edge and the fourth straight edge.